In the presence of K2CO3 and trace water in diethunol dimethyl ethene,these olefins react with arsenic ylide to give electron-deficient cyclopropane derivatives with high stereoselectivity.

A new convenient synthesis of a series of polyfluoroalkyl substituted cyclopropane derivatives was achieved by the reaction of polyfluoroalkyl iodides with diethyl allylmalonate in the presence of sodium dithionite in 45%～55% yields.

All of the 1H and 13C NMR chemical shifts of cyclopropane derivative were assigned through 2D NMR with Pulse Field Gradient(PFG) techniques ,the stereo configuration was simulated by molecular simulation methods using the SGI INSIGHT II software,and the most stable configration was calculated.

Fifteen pairs of enantiomers of cyclopropane derivatives were resolved well on capillary gas chromatography using these β-CD derivatives as chiral stationary phases.

This paper deals with the reaction of 1,2,3 trisubstituted electron deficient cyclopropane derivatives cis 1 carbomethoxy 2 p substitutedphenyl 6,6 dimethyl 5,7 dioxo spiro [2,5] 4,8 octadiones with thiophenol to give the products 4 and 5a.

Bicyclic fused aziridines can generate regioselective ring opening reaction with various alcohols,catalyzed by slight concentrated sulfuric acid.

The methods to synthesis aziridines are reviewed in this article.